##  [Group Delay](/group-delay) 

  ##  [Group Delay](https://engineering.quantumdictionary.io/group-delay-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The frequency-dependent time delay experienced by the envelope of a narrowband spectral component when propagated through a linear time-invariant network, defined as τg(ω) = −dφ(ω)/dω where φ(ω) is the network phase response; units: seconds. Group delay quantifies how phase varies with angular frequency and predicts time-domain dispersion and pulse distortion for band-limited signals.